Type: Bluetooth Connection Rated voltage: DC-12V Output frequency range: 20Hz~20kHz car tool: radio moto The product has a variety of functions, such as alarm clock, mp3 player, FM radio, etc.; Support USB, SD, TF, plug and play; Built-in Microphone, Incoming Display, Phone Ring Tip, ensue that you can catch every phone call. Suitable for any motorcycle and electric bicycle. 1. With display 2. Bluetooth playing function 3. Bluetooth call function 4. Can answer and cut off phone call 5. Mobile phone charging function 6. Power off memory function 7. Waterproof function 8. FM radio function 9. USB playing function 10. TF card playing function 11. Pause/play function 12. Support host making phone call Output power: 2 x 15WOperating temperature range: -30~+60 degrees Celsius Bluetooth control distance: 6 meters or more Mobile phone charging current: 800mA Standby mode current: 15mA colour:black Material:plastic size:audio host 120 x 60 x 60mm/4.72 x 2.36 x 2.36 inch speaker 100 x 85 x 85mm/3.94 x 3.35 x 3.35 inch Package Contents: 2 x Host 4 x Speakers 2 Cord 2 Pair of Speaker Stands 2 x Audio stand Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.